William w



(No Model.) 1 W. W. MINER.

MANUFAGTURE 0F HORSESHOE NAILS.

No. 415,818. Patented Nov. 26, 1889.,

n PETERS. Pnwum w, wmm mn. u. a

UNIT D STATES. PATENT OFFICE.

\VILLIAM IV. MINER, OF N EXV HAVEN, CONNECTICUT, ASSIGNOR OF ONE-HALF TO CHARLES S. MERSICK, OF SAME PLACE.

IV|AN UFACTU RE OF HORSESHOE-NAILS.

SPECIFICATION forming part of Letters Patent No. 415,818, dated November 26, 1889. Application filed February 11, 1889. Serial No. 299,385. (No model.)

To all whom it may concern: second plate, having their adjacent faces Be it known that I, \VILLIAM W. MINER, shaped so as to form a recess between them of New Haven, in the county of New Haven. corresponding in section to the shape of the and State of Connecticut, have invented a new blank to be produced. This blank, as seen Improvement in the Manufacture of Horsein Fig. 3, is to be round in transverse section,

shoe-Nails; and I do hereby declare the folbut tapering, the taper being such as to dislowing, when taken inconnectionwith accomtribute the metal throughout the length of panying drawings and the letters of referthe nail, and so asto give the requisite quanence marked thereon, to be a full, clear, and tity required at such diiterent parts for the IO exact description of the same, and which said finished nail. 6O drawings constitute part of this specification, Underapractical construction of themethod and represent, inof rolling the plates A B reciprocate, but in Figure 1, a side view of the nail complete; opposite directions, and so that a blank 01": Fig. 2, an edge View of the same; Fig. 3, the metal placed between them will be rolled and [5 rolled blank preparatory to flattening; Fig. delivered from the plates, the metal assuming at, devices for rolling the blank; Fig. 5, dethe shape of the space between the plates at vices for flattening the blank and finishing the delivery. This method of rolling metal the nail; Fig. 6, a face view of the die portion is well known, and does not require particuin which the blank is rolled. lar description. After the blank D, Fig. 3,

20 This invention relates to an improvement has been thus produced by the rolling operain the manufacture of the class of nails used tion it is flattened by suitable dies or rolls. for securing horseshoes and known in the As an illustration of the rolls as applied to trade as horseshoe-nails. flattening the nail, E F represent a pair of Theblanks for making horseshoe-nails are rolls arranged to work between two surfaces 25 formed to the general outline of a horseshoe- G H. In the lower surface is a cavity 1), cornail, always with aflatsurface. Subsequently responding to the shape of the nail, its bevel to such formation of the blank the proper point, as seen in Fig. 5, and the taper, as seen curvature is given throughout and the tips in Fig. 6, and also the shape of the head. beveled and pointed. Complicated machinery The opposing surface G serves as a guide to 30 is necessary for this work and embraces nupress upon the rollers and hold them in merous operations. proper contact with the blank to be rolled The object of my invention is a simple and throughout the length of the nail, and so that cheap method of manufacture, whereby many the round blank introduced into the cavity of the operations now required will be disof the part II and the rolls passed over the 3 5 pensed with; and the invention consists in blank from point to head will completely finfirst rolling the body of the blank of a taperish the nail, beveling, pointing, and flattening form round in transverse section, the taing it. The rolls, E F are supported from a per distributing the requisite quantity of carriage I, and reciprocating movement is metal for different parts of the body, then imparted to the said carriage, the means for 40 flattening the body by pressure to give it the such reciprocatingmovement (not shown) berequired thickness, such flattening throwing ing immaterial to the invention. the metal to the sides to give the requisite The amount of metal which is put into the width, and as more fully hereinafterdescribed. blank in the blank forming or rolling opera- In the formation of the nail I takea round, tion is such that when flattened, as I have de- 45 square, or other suitably-shaped rod of the scribed,therequiredwidthof the nailthroughrequired transverse area for the production outits length will be attained. The blank will of the nail and roll the rod between surfaces be pointed and finished in the operation of which together are the shape the reverse of flattening. that required to be produced. The illustration which I have given for flat- 50 In Fig. 4, A represents one plate, and B a tening the blank will be sufficient to enable TOO others skilled in the art to flattenthe blank by other meanssuch, for instance, as between dies.

In the nail thus produced the metal is very solid and compact. The operation gives to the nail the required temper, and it is much tougher and less liable to split and more pert'ect than can be produced by the usual forging operation and subsequent trimming, pointing, and bending.

The machinery for rolling, as Well as the machinery for flattening, may be automatic. Such automatic machinery will constitute the subject of another application.

The body of the nail below the headsay as below the line a of Fig. 3may be rolled 1nto tapering shape, as Ihave described, without rolling the head, the head being otherwise shaped. This rollingoperation Will give to the nail the solidity, toughness, and temper which are desirable.

I do not claim, broadly, making the body of a horseshoe-nail round and then flattening that round body, as such, I am aware, is not new.

I claim- The method of manufacturing horseshoenails Which consists in first rolling the blank round in transverse section throughout, but

tapering, and so that the requisite quantity of metal for the formation of the nail'is distributed through the head and body, then fiattening the body and head, substantially as described.

WILLIAM XV. MINER. \Vitnesses:

JOHN E. EARLE, FRED G. EARLE. 

